Color-Coated Steel Sheets for Roofing - Mill Direct

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

Customizable Rock-bottom price

$720 1-49 ton Base price

$688 50-99 ton 4.4% off

$673 ≥100 ton 6.5% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 720.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Color-Coated Steel Sheets for Roofing

Property	Parameter	Description
Product Name	Color-Coated Steel Sheets for Roofing	Pre-painted galvanized/galvalume steel sheets with polymer coating for roofing applications
Material Grade	CGCC / DX51D+Z / TDC51D+Z	Equivalent to ASTM A755M, EN 10169, JIS G3312; base metal: hot-dip galvanized or Zn-Al alloy coated steel
Standard Compliance	ASTM A755M / EN 10169 / JIS G3312 / GB/T 12754	Meets international standards for continuously organic-coated flat-rolled steel products
Chemical Composition (Base Steel)	C ≤ 0.12%, Mn ≤ 0.60%, P ≤ 0.045%, S ≤ 0.045%, Si ≤ 0.50%	Low-carbon steel substrate ensuring good formability and coating adhesion
Coating Type	PVDF / SMP / Polyester (PE) / HDP	PVDF offers superior UV resistance; PE is cost-effective; SMP balances flexibility and durability
Coating Thickness	Top coat: 15–25 µm; Back coat: 5–15 µm	Measured per EN ISO 2808 / ASTM D7091; primer layer 5–8 µm included
Zinc/Zinc-Alloy Coating Mass	Z100–Z275 g/m² (Galvanized); AZ50–AZ150 g/m² (Galvalume)	Per ASTM A653 / EN 10346; higher coating mass improves corrosion resistance
Tensile Strength	270–560 MPa	Per EN 10169 / ASTM A755M; varies by grade (e.g., DX51D: ≥270 MPa; S350GD: ≥420 MPa)
Yield Strength	140–420 MPa	DX51D: ≥140 MPa; S280GD: ≥280 MPa; S350GD: ≥350 MPa per EN 10169
Elongation	≥16–22% (A80mm)	Ensures formability for roll-forming and profiling of roofing panels
Thickness Range	0.20–1.50 mm	Common roofing thickness: 0.35–0.80 mm; tolerance per EN 10143 / ASTM A924
Width Range	600–1,250 mm	Slit coil or sheet; standard widths: 914 mm, 1,000 mm, 1,219 mm available
Surface Finish	Smooth / Embossed / Matte / High Gloss	60° gloss value: matte 10–30 GU, gloss 60–85 GU per ASTM D523; RAL color matching available
Application	Roofing, wall cladding, industrial buildings, warehouses, residential housing	Suitable for corrugated sheets, standing seam roofs, sandwich panels, and trapezoidal profiles
Certification	ISO 9001, CE Marking, SGS, BV, RoHS Compliant	Third-party inspection available; mill test certificate (MTC) per EN 10204 3.1 provided
Packaging	Coil: eye-to-sky or eye-to-wall on steel pallet; Sheet: bundled with steel strapping	Waterproof paper + plastic film wrapping; coil weight 3–8 MT; export seaworthy packaging
MOQ	25 MT per order (coil); 5 MT (cut-to-length sheets)	Mixed colors/specifications accepted above MOQ; sample order available upon request

Color-Coated Steel Sheets for Roofing - Mill Direct

Color-coated steel sheets for roofing represent one of the most versatile and cost-effective building envelope solutions available in today's construction market. Engineered to withstand harsh UV exposure, heavy rainfall, and temperature fluctuations ranging from -40°C to +120°C, these panels deliver long-term structural integrity alongside outstanding aesthetic flexibility. Architects, contractors, and property developers across residential, commercial, and industrial sectors rely on mill-direct supply chains to secure premium-grade coated steel at competitive lead times. Whether you are covering a logistics warehouse spanning 50,000 m² or a residential development requiring precise colour matching, mill-direct procurement eliminates intermediary markups, guarantees traceability to the original coil batch, and ensures consistent coating thickness across every shipment. Our manufacturing base produces over 200,000 metric tonnes annually, enabling us to fulfil both spot orders and long-term frame contracts with equal efficiency. Choosing the right roofing steel partner directly impacts project timelines, lifecycle costs, and building compliance — making supplier selection a critical early-stage decision.

What are Color-Coated Steel Sheets for Roofing?

Color-coated steel sheets for roofing are cold-rolled or hot-dip galvanised/galvalume steel substrates onto which one or more layers of organic coating — typically polyester (PE), high-durability polyester (HDP), polyvinylidene fluoride (PVDF), or silicon-modified polyester (SMP) — are applied through a continuous coil-coating process. The result is a lightweight, corrosion-resistant panel available in a virtually unlimited colour palette, suitable for exposed roofing applications in both temperate and aggressive coastal environments.

Color-coated steel sheets for roofing supplier

Color-Coated Steel Sheets for Roofing Manufacturing Process

Production begins with a high-tensile cold-rolled or zinc-coated substrate (Z275 or AZ150 galvalume) that is cleaned, chemically pre-treated with a chromate-free passivation layer, and then passed through a precision roll-coating line. A primer coat of 5–8 µm is applied and cured at 220°C, followed by a topcoat of 15–25 µm baked at 230°C. A back coat of 5–10 µm is simultaneously applied to the reverse face. The continuous process achieves line speeds of up to 120 m/min, ensuring uniform film build and colour consistency measured to ΔE ≤ 0.5 per batch.

Color-Coated Steel Sheets for Roofing Technical Specifications

Standard offerings cover base metal thicknesses from 0.30 mm to 1.20 mm, coil widths up to 1,250 mm, and tensile strengths of 280–550 MPa conforming to EN 10169, ASTM A755, and JIS G3322. Zinc coating weight reaches Z275 (275 g/m²) or AZ150 aluminium-zinc alloy. PVDF topcoat systems deliver a gloss retention of ≥ 50% after 10 years of Florida exposure testing, salt-spray resistance exceeding 1,000 hours per ASTM B117, and T-bend flexibility of 0T–2T without coating cracking. RAL and custom colour matching is available with a minimum order quantity of 25 metric tonnes per colour.

Color-coated steel sheets for roofing manufacturer

Get a Competitive Quote for Color-Coated Steel Sheets for Roofing

Partner with our mill-direct team to access transparent pricing, certified mill test reports, and dedicated logistics coordination. Share your project specifications today and receive a detailed quotation tailored to your volume, coating system, and delivery schedule — all within 24 hours.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

Color-coated steel sheets for roofing wholesale

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Kevin R.

United States

2025-01-28

Initial colour batch mismatch — resolved promptly, now satisfied

On our first order of 55 MT of 0.45 mm polyester-coated Z275 sheets, two coils arrived with a visible ΔE variance exceeding the stated 0.5 tolerance — noticeable against previously installed panels on the same project. Raised the issue immediately; the supplier acknowledged the batch discrepancy within 24 hours, issued replacement coils at no additional cost, and expedited delivery within 10 days. The replacement material was within spec. The resolution process was handled professionally and the technical team provided updated QC documentation. Cautiously optimistic for our next order.

Sarah B.

United Kingdom

2025-02-19

Competitive mill-direct pricing and solid quality — delivery tracking could improve

Purchased 45 MT of 0.50 mm HDP-coated sheets (Z275, 550 MPa tensile, EN 10169 certified) for a mixed-use development in Manchester. Coating quality was verified by our site QC team — topcoat at 20–22 µm, back coat at 8 µm, both within spec. Mill test reports were accurate and detailed. The one area for improvement is shipment tracking visibility: updates between loading and arrival at port were infrequent. Not a deal-breaker given the price advantage over domestic suppliers, but better real-time logistics communication would make this a five-star experience.

Omar A.

UAE

2025-03-13

Good value on PVDF sheets for high-temperature application — minor MOQ constraint

Sourced 75 MT of 0.60 mm PVDF-coated AZ150 for a commercial complex in Dubai where rooftop temperatures regularly exceed 80°C. Performance across the -40°C to +120°C rated range is holding well after six months of installation. Mill test reports and JIS G3322 compliance documents were complete. Only friction point was the 25 MT minimum order per custom RAL colour — we needed three colours at smaller quantities and had to consolidate. Pricing per tonne was still better than regional distributors. Would order again with adjusted colour planning.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What materials do you offer for roofing and wall cladding?

A:We supply color coated steel coils, corrugated roofing sheets, glazed tiles, PPGI, PPGL and related roof accessories.

Q: How long is the service life of your roofing sheets?

Q: Can you provide customized colors and patterns?

Q: What thicknesses are available for color steel coils and sheets?

Q: Can your color steel sheets be used outdoors?

Q: How about the packaging to avoid damage during shipment?

Product display

Zhonghe Building Materials Co., Ltd. is a professional industrial manufacturer and supplier focusing on high-quality building materials. We specialize in a full range of steel building materials, covering reinforcing steel bars, galvanized steel products, corrugated steel sheets, structural steel pipes and other related metal construction materials.

Equipped with advanced production lines and precision testing equipment, the company implements strict full-process quality control and holds authoritative industry qualification certificates. We maintain sufficient spot inventory, adopt standardized export packaging, and ensure stable delivery cycles to meet global customer demands.

Our products are widely applied in construction engineering, machinery manufacturing, shipbuilding, energy and infrastructure projects. Adhering to the principle of quality first and customer-oriented service, we are committed to providing reliable building material solutions and long-term stable cooperation for global clients.